Press-locked grating is also called pressure locked grating or press-locked steel bar grating. Basically, the press-locked grating have the same load capacity with the welded steel bar grating. The difference between press-locked grating and welded steel bar grating are joint connection technology and cross bars.

Cross bars of welded steel bar grating are twisted square rods and the bearing bars are rectangular bars or I type bars. Both the bearing bars and cross bars of press-locked grating are rectangular bars.

Compared to welded steel bar grating, which is produced through resistance-welding process, the press-locked grating is constructed with the two close-tolerance slotted bars bonded together by tremendous hydraulic pressure. This production can let press-locked grating be a permanent locking.

Press-locked grating and swage-locked grating has excellent lateral stiffness, which can be used in some special applications. And the serrated surface is available for press-locked grating.

Smooth press-locked grating for easy access of vehicles and pedestrians.

Serrated press-locked grating for better skid resistance performance.

Classification of press-locked grating

Press-locked grating has main four types because they have different bearing bars and cross bars.

1. Full-locked grating. Both the bearing bars and cross bars are notched and have the same height. They are interlocked with one another under extreme pressure.
2. Heavy-duty pressed grating. Both the bearing bar and cross bar are notched, but they have the different heights. The bearing bars are higher than the cross bars and they are interlocked with each other also at a high pressure.
3. Press-locked grating. Only the bearing bars are notched and the cross bars are common plain steel. They have different height and are locked with each other at a very high pressure.
4. Louver grating. The notches of bearing bars are at a angle of 30° or 45°. The cross bars are insert into the bearing bars before being pressed. This type is widely used in the places where the privacy is very important. It can also be used as sunshade of the buildings.

Bearing bars and cross bars are notched and have same height.

Bearing bars are higher than the cross bars and they are all notched.

Bearing bars are higher than the cross bars and only bearing bars are notched.

Notch on the bearing bars are at a angle of 30° or 45°, the cross bars are insert into it before being pressed.

Specifications

• Material: low carbon steel, stainless steel and aluminum.
• Surface treatment: galvanized, painted and powder coated.
• Cross bar spacing: 4" or 2".
• Bearing bar spacing: standard is 1-3/16" and 15/16".

Features

• Smooth surface.
• Good air, light and water circulation.
• Firm and durable.
• Temporary or permanent applications.
• Stainless steel press-locked grating for alkali and acid resistance.
• Aluminum press-locked grating for light weight and corrosion resistance.
• Painted or galvanized surface treatment for longer service life.
• Excellent lateral stiffness.
• Serrated surface for anti-skid performance.
• Press-locked grating can be used combined with checker plate for further skip resistance.

Serrated surface press-locked grating is widely used in the stair treads for anti-skid.

Press-locked grating can be used combined with checker plate for further skid resistance.

Applications

• Press-locked grating has the similar application with welded steel bar grating and swage-locked grating.
• Press-locked grating can be used as stair treads, platforms, walkways in industrial factories or parks.
• Press-locked grating can be used as security screen in the commercial buildings.
• Press-locked grating is widely used in the municipal engineering as tree cover, trench cover and drainage cover.

Press-locked grating with smooth surface can be used as stair treads.

Press-locked grating can be used in the marine industries as working platform.

Press-locked grating can protect the tree root and ensure the enough water and air circulation.

Press-locked grating with high load capacity is widely used as walkways for vehicles and pedestrians.